Would methadone help those with oxy addiction?

Mutual support helps. Methadone might provide biological support. Consider attending a meeting of narcotics anonymous for social support.
Yes. Opiate detox and dependence can be physically and emotionally distressing. Detox treatment is recommended to handle opiate withdrawal symptoms followed by addiction treatment. Methadone is one option for handling opiate detox and addiction treatment. Detox alone will not address the issues underlying addictive behavior. Opiate addiction treatment is necessary to help combat relapse.